> -----Original Message-----
> From: SouthEast US Scuba Diving Travel list
>
> > Once observation; with the DIN, you can unscrew the first stage
> > with a bit of pressure left in, and that unseats the O-ring.
> > Had someone lose his that way two weekends ago (fortunately
> > it was still in the previous tank). Anyone else noticed this?
>
> Well, you can probably unseat a yoke valve o-ring the same way if you try
> hard enough.  I have 6 DIN regulators and I've never unseated any o-rings

Can't say I've noticed that with yoke; much harder to remove with any
pressure in there, perhaps because the threads are finer, and they bind with
pressure.

> doing what you describe. My first suspicision would be that your friend
> didn't have the correct size o-ring on his regulator.  Smaller
> gauge o-rings
> will still most likely provide a seal but they will fall out of the
> regulator more easily than the correct size.

With this chap, anything is possible, but I don't think so, as he doesn't
know enough to be dangerous. :)

> By they way, the Scubapro brand hose protectors come with a handy o-ring
> retainer for spare valve o-rings.  Most people it seems don't
> know this.  On
> the sides of the Scubapro hose protectors there are circular grooves that
> are designed to hold spare o-rings.  They actually stay in there
> pretty well
> and it's a perfect place to store a couple extra o-rings.  That

So I noticed; as the only Scubapro hose protector is on my wife's AIR 2, we
keep a spare O-ring for yoke on that. Apeks also has one on the ball cover
of their yoke adapter.

Cheers,
Poe
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